Oil-feed controller



F. L. FULDAU ER. ro'lL FEED CONTROLLER APPLICATION FILED NOV. 19 I920. 1,383,926; Patented Jul 5,1921.

' 4 SHEETS-SHEET I.

F. L. FULDAUER.

OIL FEED CONTROLLER.

APPLICATION FILED NOV. i9, 1920.

1,383,926. Patented July 5,1921.

4 SHEETS-SHEET 2- F. L. FULDAUER OIL mo CONTROLLER.

APPLICATION FILED NOV. 191 i920 1,383,926, Patented July 5, 1921 4 SHEETS-SHEET 3.

M M w a III I l k I V NuQFQ ll] w HY EL ivQ F. L. FULDAUER.

OIL FEED CONTROLLER.

APPLICATION FILED NOV. 1.9., 920.

1,383,926., Patented July 5, 1921;

4 SHEETS-SHEET 4- FREDERICK L. FULDAUER, OF CLEVELAND, OHEO, ASSIGNOR T0 AMERICAN STOVE COLIPA'NY, 01 ST. LOUIS, IVEISSOUBI, A CORPORATION OF NEW JERSEY.

DEL-FEED CONTROLLER.

Application filed. November 1 To all whom it may concern Be it known that I, llnniumicir L. FUL- DAUnR, a citizen of United States, residing at 5017 Perkins Ave, Cleveland, in the county of Cuyahoga and State of Ohio, have invented certain new and useful Improvements in Oil-Feed Controllers, of which the following is a specification, reference being had therein to the accompanying drawing.

This invention relates to improvements in oil feed controllers, for controlling and regulating the flow of oil to the burner trough of a wickless blue flame oil stove.

It is well known to persons skilled in this art, that a wickless blue flame oil stove comprises a trough containing a lighting member, in which trough tie oil is fed and vaporized and the vapor passes upward between concentrically arranged perforated combustion tubes through which air passes and mixes with the vapor between the tubes, whereby a smokeless blue flame issues from between the upper ends of the combustion tubes, the flame usually used in stoves for cooking purposes.

In this form of burner, the height of the flame is controlled by the level of the oil in the burner trough, and the amount of oil fed to the trough, which controls the rate and amount of vaporization of the oil taking place in the trough.

In this form of burner, means is provided for maintaining a maximum amount of oil level in the trough for maintaining a full flame, and the flow of the oil to the trough has been controlled in two ways.

One form of control is a needle valve lo cated in the oil feed conduit for controlling the flow of the oil to the trough and thereby regulating the depth of oil in the trough and regulating the rate of flow of the oil to the trough.

Another way of controlling the amount of oil maintained in the trough is by having the oil level adjustable from maximum to minimum. or by moving the trough vertically in respect to a fixed oil level, whereby the oil level in the trough is regulated from maximum to minimum.

My improvement is applied to a burner in which both the trough and the oil level are fixed in respect to each other, and to control the flow of oil to the trough by an improved oil controller located in the conduit between. the trough and the oil level supply.

Specification of Letters Patent.

Patented July 5, 1921.

Serial No. 425,124.

Heretofore, where the flow of'oil to the trough is controlled by means located in the conduit between the trough and the oil supply, a needle valve has been practically the universal means for controlling the flow of the oil.

A wickless blue flame oil burner after being heated up is very sensitive to the slightest variation in the amount of oil supplied to the trough and it has been dillicult for the mechanical unskilled persons who operate the burners, to accurately control the flow of the oil and thereby the flame of the burner; and in the use of the needle valve it has not been possible to quickly extinguish the burner, because when the valve is closed the trough contains a certain amount of oil which must be consumed before the burner is extinguished.

My improvement comprises a regulating means which is located in the oil supply conduit so constructed. that the flow of the oil is not so suddenly or sensitively controlled, whereby unskilled operators can evenly con trol the flow of oil to maintain the desired height of flame, and whereby the burner is quickly extinguished by rapidly draining the trough of the oil contained therein at the time it is desired to extinguish it.

In the accompanying drawings, l have illustrated some of the lace 'cal expressions of means for carrying out my present improvement, in which Figure 1 is a vertical section of a stove frame showing my improvement applied thereto.

Fig. 2 is a vertical section taken through the burner and my present improvement, showing the controller located in the oil feed conduit, the control being shown in full open position.

Fig. 3 is a vertical sectional view of. my improvement, showing it in closed position.

Fig. 4 is a similar sectional view to Fig. 3, showing the control partially open.

Fig. 5 is a detached side elevation of the movable controlling member, looking at the inlet side thereof.

Fig. 6 is a view similar to Fig. 5, looking at the outlet side thereof.

7 is a vertical section, showing a modification, of the controlling member, shown in partial open position.

Fig. 8 is a detached elevation showing a dial to cooperate with the pointer.

Fig. 9 is a View at right angles to Fig. S,

supply conduit which is common to a plurality of burners. I

The burner A comprises the usual inner and outer perforated combustion tubes 1 and 2, the usual form of trough 3 which contains the usual form of lighting member 4:, the operation of all of which is fully under stood by those skilled in the art.

4 The oil supply level tube C may be of any of the well-known constructions for that purpose, which is sowell understood by those skilled in this art that it is unnecessary to show any specific form. This oil supply level C is connected with an oil supply conduit E, which is in communication with the trough of one or more wickless blue flame burners, and this supply conduit includes my improved oil feed controller B.

- The form of my oil feed controller, shown in Figs. 2 to 6, inclusive, is one mechanical expression of my present improvement. This mechanical embodiment of my improvement comprises an outer member 5 and an inner member 6, and these members are relatively movable for controlling the oil supply. As here shown, the outer member 5 is in the form of a cylinder or tube and the inner member 6 is 1n the form of a movable valve or plunger. The cylinder 5 is considerably longer than the inner valve 6, and these last-mentioned members are made relatively movable in the form here shown by having the valve 6 move longitudinally in the cylinder This is accomplished by connecting a rod 7 to the upper end of the valve 6, which extends through the upper end of the cylinder and provided with cogs 8. A shaft or rotatable rod 9 is suitably mounted on bearings 19 carried by the upper end of the cylinder and this'rod carries a pinion meshing with the cogs 8. This rod 9 is rotated by a suitablehandle 12, and the rod carries a pointer 13 cooperating with a suitable dial 1.4-,for indicating the relative position of the I valve 6 1n the. cylinder 5, for controlling the flow of the oil to the trough 3. The bottom of the trough 3 communicates with the cylinder 5, intermediate its ends, through a'suits.

able] conduit 15 and the cylinder 5 com municates with the oil supply pipe E, through a conduit 16. and a suitable conduit connection 17. The conduit 16 is in a different horizontal plane from the conduit 15, in the form here shown, and in a plane below the conduit 15.

The valve 16 has a longitudinal opening 18, the upper portion of which has an outlet opening 19 and the lower portionan inlet opening 20. The outlet opening 19 is adapted to register with the conduit 15 and the inlet opening to register with the conduit 16.

The outer surface of the valve 6 is .provided with a tapered recess 21, having its largest end communicate with the opening 20. This recess 21 is gradually decreased in" depth and width from its lower to its'upper end 22. I I f Attention is called to the fact that the cylinder 5 extends above the oil level, and,

in fact, in the form here shown above the top of the trough 3, which forms a chamber 23 above the valve 6'.

In Fig. 2, the valve 6 is shown in its wide open position.

sition the upper end of the valve is considerably below the conduit 15,- which forms a In Fig. 3 the valve is shown in itsclosed position, and in this latter po.

chamber 2 1 between the upper end ofthe valve 6 and thehorizontal plane of the bottom of the trough 3 and, in fact, considerably belowthe lower end of the conduit 15. This chamber 2d performs an important function in my present improvement.

The operation of the parts thus faridescribed is as follows: a i Y lVhen the burner is to be lighted, the

pointer 13 will be turned to open position,

as indicated on the dial 14', through :the medium of the handle 12, andthis lowers the valve 6 to open position,; as shown in Fig.7 2. 'Oil then flows through the conduit 16 into the valve opening-18, through the valve outlet 19 to the conduit 15 andftherethrough into the trough 3. The oil rises 1n].

the trough to the: oil. level. The outer or both of the cembustiontubes are lifted from i by moving the valve-6 downwardr" As the I valve 6 is moved downward, the flow of oil.

through the valve is slowly graduated'by reason of the tapered recess 21, and it is found 1n practice that in this way the flow of oil can be graduated to a nicetyand refinement, which cannot be practically accomplished by a needle valve, WlllCh is the usual controlling device in the oil supply conduit of blue flame oil stoves.v 7 I 7 It will be understood that thistapered re cess 21 may be of any desired length to suit.

the conditions. The valve 6 andthe recess 21 are shown substantially full-sized in Figs.

5 and 6, and this size of recess is "found in practice to be eificient in enabling the mechanical unskilled users to adjust the flame oi the burner to a degree which is not possibl with the ordinary needle Valve in the hands of unskilled persons. The construction also avoids the necessity of the stuffing box which must be used around the stem of a needle valve, as is well understood to persons skilled in this art.

Another feature of my improvement is to enable the burner to be quickly extinguished. This is accomplished by reason of the fact that when the parts are turned to closed position, as in Fig. 3, a chamber 24: is formed above the valve 6 into which oil quickly drains from the trough 3, so that there is no oil left in the trough to be consumed when the valve is in its closed position.

To permit the oil to -flow through the valve 6 into the conduit 15, when the valve is elevated, for instance, to the position shown in Fig. 4 for reducing the flow of oil, through the intervention of the tapered recess 21, the outlet side of the valve 6 is provided with a vertical passage-way 25, with an open top and its lower end communicating with the outlet opening 19. By this construction when the valve 6 is lowcredsuiliciently to carr the outlet opening 19 out of communication with the conduit 15, communication is established between the opening 19 and conduit 15 by the passage 25. The same result, of course, could be accomplished by elongating the opening upward, but I find the construction of the passage-way 25 to be.the most desirable way of accomplishing the above-described result.

With the valve 6 in the open position, as shown. in Fig. 2, the lower end of the valve 6 is above the bottom of the cylinder 5, forming a chamber 26 into which oil seeps around the valve, and when that occurs, if 'g'iermitted to remain, it would interfere with the downward movement of the valve. To provide an outlet for any oil seepage into the chamber 26 when the valve 6 is moved downward, 1 provide a pipe 27 which has its lower end 28 in communication with the bottom of the cylinder 5, and its upper end 29 in communication with'the conduit 16 and thereby with the supply pipe reason ot this construction when the valve 6 moves downward in the cylinder 5, any oil in the bottom 01? the cylinder is forced through the pipe into the supply pipe E, thus permitting the valve to move down ward to its closed position, as shown in Fig.

3.. VYhen the valve 6 is in its downward closed position, its lower end will close the lower end 28 of the pipe 27, as shown in 3. Preferably, this pipe 27 has its upper end 30 above the oil level.

By means of this construction, the amount of flow of oil to the burner trough can be regulated to a nicety in the hands of the ordinary user and thus obtain the desired height of flame, and accomplishes a quick extinguishment of the burner when the valve is in closed position.

In Fig. 7 l have shown one modification, in that the tapered recess 21 extends around the valve 6, as shown at 21 in Fig. 7. This is shown, however, only as illustrating a construction that may facilitate the forming of the tapered recess. Its operation is identically the same as the form of recess shown in other figures of the drawings.

1 wish it to be understood that variations may be made in the construction of the parts without departing from the spirit and scope oi my invention.

I desire it also to be understood that other means may be used than that here shown, for moving the controlling members 5 and 6 in relation to each other, without departing from my invention.

The dial 1 1 is secured to the member 5, by means of a suitable screw'31, as shown in Fig. 9. This dial cooperates with the pointer 13, for the purpose of indicating to the operator the position of the pointer.

For the purpose of lifting the combustion sections 1 and 2, any suitable form of lifting rod 82 engages a diaphragm within the inner tube 1, and extends down below the trough A lever 33 is intermediately pivoted to the member 5 at 34, the inner end 35 of the lever engaging the lower end of the rod 32, and the outer end of the lever extends through a bayonet slot 35, formed in the lower portion or a downward extension 36 from the dial 1d. The outer end of the lever 33 is provided with any suitable form of handle 37. The combustion sections are lifted by this rod for the purpose of igniting the lighting member 4:, and by means of the bayonet slot 85, the lever can be locked to hold the combustion sections out of contact with the trough when it is not being operated for the purpose of preventing accumulation of oil on the combustion section by capillation from the trough, the reason for which is well understood to those skilled in this art.

Having thus described my invention, what I claim and desire to secure by Letters Patent is:

1. A. controller for oil burners, comprising an oil conduit, a controller located in the conduit comprising two members, one movable in respect to the other, one of said members having an oil passage tapered toward its closed position, for the purpose described.

2. A controller for oil burners, compris ing a supply conduit, a controller located therein comprising two members, one movable in respect to the other, one of said members provided with an oil passage gradually posltioni tapered. in the direction toward its closed :23. Thecombination' with a burnertrough,

' the'upper and lower openings of the valve of an oil supply conduit, a controller within the conduit, the controller comprislng avertical cylinder, a valve longitudinally movable in the cylinder to open and closed 'posi- H tions, the'valve having a longitudinal. opening with upper. and. lower openings communicating therewith, the cylinder having inlet and outlet openings registering with when the latter is in open position, the valve i and Cylinder relativelymovable, one of said members having alongitudinally extending tapered recess in communication with one" of its said openings, for the purpose described.

4. The combination with a burner trough, of an oil supply conduit, an oilcontroller located in the conduit, the controller eomprising a cylinder, a movable valve within the cylinder, the parts movable to open and closed positions, the valve and cylinder having inlet and outlet openings out of. line with butregistering when in open position,

. one ofthe members'having a tapered recess communicating withrthe ad acent opening 40 provided with a tapered opening which extends in a direction awayffrom the'valveof' the. other member as it moves to closed position, for the purpose described; 7

5. The combinationwith a burner trough, of an oil supply conduit, an oil controller located within the conduit, the controller comprising a cylinder and a valve longitudinally movable in the cylinder, the cylinder having upper and loweropenings, the valve I having a longitudinal opening with upper and lower-openings adapted to register with the cylinder openings when the valve is in open position, the valve having its outer face i movement to closed position, for the purpose "vided with a recess tapering upward, the" 55., "the lower opening of the Val th P .pose' described.

described. V g The'combinationwith a burner trough, of an oil supply conduit,an.oil controller located in the conduit, the controller compris- 111,; a vertical cylinder and a valve inclosed and longitudinally movable therein to open and closed positions, the valve and cylinder having inlet and outlet openings out of line but registering when the valve is inopen position, the valve having its outer face prolowerend ofthe' recess communicating with 7. Theeombination with a burner trough of an oil conduit, a controller in the conduit, 'a controller'comp'rising a vertical cylinder and a valve. inclosed and. longitudinally movable therein to openand closed positions, the valve andcylinder having upper and. lower open ngs registering when the valve is mopen position, the valve having end, for the purpose described.

in its 7 upper face a recess communicating with its lower opening, the recess decreasing in depth and width to its outer end,for the' purpose described. v 1v v 8." The combination with a burner trough of an oil conduit, a controller in the conduit, the controller comprising a vertical elon- 1 gated cylinder, theverticallyelongated valve v longitudinally movable-in the cylinder to open and closed positions, the valve and cylinder having upper openings in communication when the valve is in open and closed 9. In a construction such as defined in claim 1, the; valve having a" longitudinal opening, a laterally extending opening at its upper endand' a laterally extending opening at its lower end, the valve .having'in its outer surface anupwardly extendi'ngre cess 1n communicatlon with the upper opening and -1n its outer, surface an upwardly tapered recess in 'communi'cationwith its lower open ng,

10. The combination witha burnertrough,

comprising relatively movable. membershaw ing inlet and outlet openings,movabletoop en and closed pos1t1ons,one of said'members i having a chamber placed into communioa-j' tion withthe burner trough'when' the members are in closed position,-whereby.the oil flows from the trough into said chamber, for the purpose described. e

11. The combination with a burner trough,

of'an' oil supply conduit, a controller in the conduit comprisingv a cylinder. and a valve relatively movable to openand closed 7 of an oil controllerv of the .type described,

positions, the valvearranged in the cylinder .to form upper-and lower chambers in thecylinder when the valve is in open'posi-i tion, the valve adaptedto placeithe troughinto communication. with one-of'the-chamfor the purpose described,

12. 'The combination with Y of a conduit in communication with the berswhen the valve is in-closedposition, aburnertrough, 7

trough and comprising. a cylinder havingupper and lower openings, "a "valve in the cylinder having a vertically .arrangedpasa sage with upper and.:lower .laterally extendlng openings arranged to. COIIl-Il'llll'llGttliG;

with the said cylinder openings when the I valve is in an openposition. and to them when in a closed position. 7

' 13. The combination withlazburner trough of an -.oil supply controller,comprisinga cylinder, a valve longitudinally movable therein to closed and open positions, the cylinder havingga chamber thrown into com munioation with the trough when the valve is in its closed position, for the purpose described.

14. The combination with a burner trough of an oil supply controller, comprising a cylinder in communication with the trough, the valve and cylinder having oil supply passages, the valve movable to open and closed positions for controlling the oil supply passage, the cylinder having a chamher in communication with the trough when the valve is moved to closed positiornfor the purpose described.

15. The combination with a burner trough, of a burner comprising a cylinder having communication with the trough, a valve in the cylinder, the valve and cylinder having inlet and outlet openings, the valve movable downward to closed position, and placing the cylinder in communication with the trough when in its downward closed position, for the purpose described.

16. The combination with the burner trough, of an oil supply conduit, a controller therein comprising a cylinder and a valve,

the valve shorter than the cylinder and movable longitudinally therein to open and closed positions, and a communication between the lower end of the cylinder and the oil supply conduit, for the purpose described. 0

In testimony whereof I hereunto aflix my signature.

FREDERICK L. FULDAUER. 

